From 9c0a21ec54b10621d3782509c7b11bc129b2f7f3 Mon Sep 17 00:00:00 2001
From: Andrew Martin <sublimino@gmail.com>
Date: Tue, 14 Aug 2018 19:39:53 +0100
Subject: [PATCH] fix: check if state.env is undefined

---
 lib/rules_inline/link.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/rules_inline/link.js b/lib/rules_inline/link.js
index 7c9834c..2b2af9b 100644
--- a/lib/rules_inline/link.js
+++ b/lib/rules_inline/link.js
@@ -98,7 +98,7 @@ module.exports = function link(state, silent) {
     //
     // Link reference
     //
-    if (typeof state.env.references === 'undefined') { return false; }
+    if (typeof state.env === 'undefined' || typeof state.env.references === 'undefined') { return false; }
 
     if (pos < max && state.src.charCodeAt(pos) === 0x5B/* [ */) {
       start = pos + 1;